Barossa German is a dialect of German, predominantly spoken in the Barossa Valley region of South Australia. The prominent South Australian writer, Colin Thiele (1920–2006), whose grandparents were German immigrants, referred to "Barossa-Deutsch" as: "that quaintly inbred and hybrid language evolved from a century of linguistic isolation". It takes its name from the Barossa Valley, where many German people settled during the 19th century. Some words from Barossa German have entered South Australian English.

The Barossa Valley is a valley in South Australia located 60 kilometres (37 mi) northeast of Adelaide city centre. The valley is formed by the North Para River. It is notable as a major wine-producing region and tourist destination.